Design of a low-cost and high-performance digital PWM controller for DC-DC converters

This paper presents a design methodology for a digital pulse width (PWM) controller that targets the digital control of high-frequency switched-mode DC-DC power supplies (SMPS). Steady state (DC) and transient (AC) specifications are considered for a synchronous buck converter, but all consideration...

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Bibliographic Details
Main Authors: Ramos, Filipe Guimaraes Russo, Pimenta, Tales Cleber, Ferreira, Luis Henrique Carvalho
Format: Conference Proceeding
Language:English
Subjects:
Buck converters
DC-DC converter digital control
digital pulse width modulator
DPWM
Feedforward systems
Pulse width modulation
Steady-state
Time-domain analysis
Voltage control
Voltage-controlled oscillators
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Description
Summary:This paper presents a design methodology for a digital pulse width (PWM) controller that targets the digital control of high-frequency switched-mode DC-DC power supplies (SMPS). Steady state (DC) and transient (AC) specifications are considered for a synchronous buck converter, but all considerations made in this paper can be extended to other DC-DC converters, such as boost and buck-boost. Additionally, a new feedforward strategy is presented, more robust than presented by previous literature, using a VCO as an element of this control.
ISSN:2473-4667
DOI:10.1109/LASCAS.2018.8399909